I have been reading Stack Exchange for years - mostly not logged in, and have never posted (this is my first). I'm simply not very talkative, and very good at googleing.
Recently a few occasions have come up when I've wanted to comment on a question. I wanted either to ask for, or provide, clarification which did not warrant a new answer.
How do I gain enough reputation to comment without a) asking questions which have already been answered or that I can figure out on my own, or b) posting my comment like as an answer (i.e. being rude)?